Backbox is a Linux security assessment and pentesting distribution based on Ubuntu core system but has the advantage of being fully customized and designed to be one of the best Penetration testing and security distribution just like Kali Linux.

What’s new?

Updated software packages are:

Metasploit Framework

Social Engineering Toolkit

WPScan wordpress vulnerability scanner

OpenVAS vulnerability assessment toolkit

BeEF exploitation framework

Ruby upgraded to version 2.2

DirSearch Web path scanner updated

Blackbox is a distro for Penetration testers who would like to do:

Web application analysis

Automotive and exploitation

Stress testing

Vulnerability assessment

Network analysis

Sniffing

Computer forensic analysis

And any other security stuff you can think of

If you’re a Linux guru or Debian/Ubuntu die hard fan, give this distribution a try and it might be your first step to fascinating world of information security. Since it uses XFCE as the default desktop environment, i bet it’s one of the lightest and fastest.BlackBox Linux Download Link
If you had already installed BlackBox Linux, just do:

sudo su -
apt-get update && apt-get dist-upgrade
apt-get install -f

Take a cup of coffee and wait for Backbox Linux installation to complete.
Other top penetration testing and security assessment Linux distributions; alternative to Backbox are: